From 76b9059b2e299dca5a96cf94f21038002f4dad3a Mon Sep 17 00:00:00 2001
From: vin <git@vineetk.net>
Date: Sun, 9 Jun 2024 13:11:05 +0530
Subject: add blank todo opcode functions based on opcode json

---
 cpu.c | 425 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 406 insertions(+), 19 deletions(-)

(limited to 'cpu.c')

diff --git a/cpu.c b/cpu.c
index bb6370b..4aeaaf6 100644
--- a/cpu.c
+++ b/cpu.c
@@ -110,7 +110,7 @@ opcode_arg(enum addressing_mode mode)
 	return val;
 }
 
-void
+static void
 adc(uint8_t arg)
 {
 	uint16_t sum;	// 16-bit sum makes it easier to determine carry flag
@@ -125,43 +125,198 @@ adc(uint8_t arg)
 	STATUS_UPDATE_NEGATIVE(regs.a);
 }
 
-void
-sbc(uint8_t arg)
+static void
+and(uint8_t arg)
 {
-	/* SBC is described online as ADC with argument as two's complement */
-	adc(~arg + 1);
+/* TODO: complete this */
 }
 
-void
-brk(void)
+static void
+asl(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bbr(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bbs(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bcc(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bcs(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+beq(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bit(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bmi(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bne(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bpl(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+bra(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+brk()
 {
-	/* $00 */
 	/* TODO: push regs.pc and regs.status to stack and load IRQ vector */
 	regs.status.brk = 1;
-	return;
+	exit(0);
 }
 
-void
-tax(void)
+static void
+bvc(uint8_t arg)
 {
-	/* $AA */
-	regs.x = regs.a;
+/* TODO: complete this */
+}
 
-	STATUS_UPDATE_ZERO(regs.x);
-	STATUS_UPDATE_NEGATIVE(regs.x);
+static void
+bvs(uint8_t arg)
+{
+/* TODO: complete this */
 }
 
-void
-inx(void)
+static void
+clc(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+cld(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+cli(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+clv(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+cmp(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+cpx(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+cpy(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+dec(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+dex(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+dey(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+eor(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+inc(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+inx()
 {
-	/* $E8 */
 	regs.x++;
 
 	STATUS_UPDATE_ZERO(regs.x);
 	STATUS_UPDATE_NEGATIVE(regs.x);
 }
 
-void
+static void
+iny(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+jmp(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+jsr(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
 lda(uint8_t arg)
 {
 	printf("arg1 $%02X\n", arg);
@@ -171,6 +326,238 @@ lda(uint8_t arg)
 	STATUS_UPDATE_NEGATIVE(regs.a);
 }
 
+static void
+ldx(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+ldy(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+lsr(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+nop(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+ora(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+pha(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+php(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+phx(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+phy(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+pla(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+plp(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+plx(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+ply(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+rmb(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+rol(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+ror(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+rti(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+rts(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+sbc(uint8_t arg)
+{
+	/* SBC is described online as ADC with argument as two's complement */
+	adc(~arg + 1);
+}
+
+static void
+sec(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+sed(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+sei(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+smb(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+sta(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+stp(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+stx(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+sty(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+stz(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+tax()
+{
+	regs.x = regs.a;
+
+	STATUS_UPDATE_ZERO(regs.x);
+	STATUS_UPDATE_NEGATIVE(regs.x);
+}
+
+static void
+tay(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+trb(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+tsb(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+tsx(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+txa(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+txs(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+tya(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+wai(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
+static void
+unp(uint8_t arg)
+{
+/* TODO: complete this */
+}
+
 void
 interpret(void)
 {
-- 
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